Question

the radius of a sphere is measured to be [2.1+-.5] cm . calculate its surface area with limits

Answer 1

Explanation:

fufif fjfu ugfthe radius of a sphere is measured to be [2.1+-.5] cm . calculate its surface area with limits

Answer 2

Answer:

surface area of sphere

A=4πr

2

a=4×3.14×(2.1)

2

=55.4cm

2

A=4πr

2

A=4×3.14×(2.1)

2

=55.4cm

2

\\

A

ΔA

=2×

r

Δr

ΔA=2×

r

Δr

×A

=2×

2.1

0.5

×55.4

=26.4cm

2

Surface area =(55.4±26.4)cm

2

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